Cleveland (CLE) to St. Louis (STL): On-Time Performance
Data through July 2026
The calendar drives reliability on CLE–STL. September 2024 flights landed on schedule 96% of the time, but December 2024 dropped to 69% — a gap of 27 points. Across the full period the route averages 85% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 75%), which matters most in the rough months.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 1.9
- last 12 months
- Duration
- 1h 39m
- scheduled
- Distance
- 487 mi
Monthly on-time trend
Best time to fly from CLE to STL
Aim for departures around 8 a.m. (94% on-time); avoid 9 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 10 min |
| Tuesdaybest | 91% | 5 min |
| Wednesday | 88% | 8 min |
| Thursday | 85% | 12 min |
| Friday | 84% | 12 min |
| Saturday | 85% | 8 min |
| Sunday | 77% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft50%
- Airline operations35%
- National airspace system11%
- Weather4%
- Security1%
Frequently asked questions
- How often are flights from CLE to STL delayed?
- 15% of CLE–STL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 10 minutes.
- What is the best time of day to fly from CLE to STL?
- Departures around 8 a.m. have the best record (94% on-time), while departures around 9 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CLE to STL?
- The scheduled CLE–STL flight time averages 1h 39m over 487 miles. Actual arrival times vary — flights on this route land 15+ minutes late 15% of the time.
- How often are CLE to STL flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from CLE to STL?
- December 2024 was the roughest month in this dataset, with only 69% of arrivals on time. The best was September 2024 at 96%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 1,462 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.